Stop device for talking machines



E. GRIEGIER STOP DEVI-CE FOR TALKING MACHINES Filed April 19, 1920 4 Sheets-Sheet l A 1.,24, 1923. lmmm E.GR|EGE|R STOP DEVICE FOR TALKING MACHINES Filed April 19, 1920 4 Sheets-Sheet 2 A Wk .11. 923. llfi-WJM E. GWIIEGER STOP DEVICE FOR TALKING MACHINES Filed April 19; 1920 4 Sheets-Sheet 5 Apr. 24, 1923.

E 'GR'IEGEIR STOP DEVICE FOR TALKING MACHINES Filed April 19 1920 4 Sheets$heet 4 atonted i l. in, ltd, llliih :tllilhli'.rl.ltll] tlfltlflitllillh, OF PlEIIIrhDElLPlE'lIlEl-l, PENNSYLVANIA.

Application filed hprililh, 1820. Serial No. ElYfilJt 1"0 all whom it may concern:

lie known that l, lflnwann (bureau, a ritiaen of the United States, residing in .lfhiladelphia, li ennsyivania, have invented a the) lleriee for 'llalki limes, of which the inllow' 1, is a speci c; ion;

invention relates to stop attaclunents pliomim'aplr-z, and one object oil. my in rcntion i to providea deviceqlor automatically hitting the stylus from the record when the stylus has reached a predetermined point thereon. i, q a .urtherobject is to provide me ns, op erating in conjunction with said styluselevating-means, whereby the machine au natically stoppml after the stylus has been elevated v i A still iurther object is to provide means tor returning the tone arm and I ylus ton position (mtwardly of the edgeot the record so that the wholedetice may bemade remlytlior restarting with a minimum oi? trouble and delay.

In the attached drawings:

' ure 1, is a plan ,viewoi a pl onograph titted with attachn'lents embodying my invention; r a

l ig;. 2, is a side elet ration of a portion of a 'ihonograph embodying my invention, an showingthe stylus in jtheaplayingi; position; Nli ig'. 2-3, a sideelevaftion similar to that oil F 2, showing thestylus elevated above the record;

l ig. 4;, is a plan view similar to that of Fig. 1,ShOWl11,9; the tone arm in the starting position; i a

lliig. 5, is a view in perspective of an attaehment embodying my inventiony Fig. 6, is a perssspective oi one term of: to releasing device; a l 7, is a view in perspective oil a record having a modified form oi release device attached thereto;

il ig. 8, is a side elevation of a modified term of my device, showing a method oi attachingz to the tone arm differing from that shown by F 5; 9, is a plan view of a phonograph illustrating a still further modification, and showing record equipped with special groove: and v v Fig. 10, is a view in sidetelevation illustrating the modification of 9.

ll ly invention comprises an automatically arm or othermo'vable stylus carryingipon of the carriage.

actuated member, movable with the tone tion of the machine, and adapted when released to engage the said stylus carrying element and thereby to raise the stylus clear oi. the record. Coincident with or directly following the elevating of the stylus,an element oi the said. member is adapted to en sage the side 01? the record supporting carriage whereby the rotary motion of the lat ter element is utilized to return the tone arm to a position to one side or outwardly he outward movement of the tone arm is limited by a suitable stop, and since the carriage engaging element of the said automatically actuated member continues to engage the said carriage, the movement of the latter is arrested with the stopping oi? the ,tone arm.

l'l ith reference to the drawings, one form of my device is illustrated in Figs. 1, 2, 5, -l and and comprises amovable member 1, mounted and adapted to slide longitudinally in suitable bearings 2, 2 upon abracket member 8, which is adapted to be secured to the tone arm 4: of a talking machine. The said. bracket member 3 has, in the present instance, upwardly extending lugs ,5, 5 ati ront and rear, and screws ,5, 53 passing through the lugs and into the sound arm 4t hold the said bracket member in place.

An arm 7 extending downwardly from one side oi the bracket member has attached thereto a spring; 8, said spring being also connected at 9 to the member 1 and'tendi to move the'said member 1 forwardly into an advanced position in the bracket member. At one side of the member 1 is a shoulder 10 which is adapted to engage the rear edge oi the forward bearingand to 11in the said member in the retracted position against the tension otthe spring 8. The forward end of the member 1 is curved downwardly at 11, and this portion, when the member is released and is carried forward by the spring 8, is adapted to engage, in the present instance, the lower edge of the sound box 12 and to force it upwardly, as clearly shown in 3, wherebythe stylus l3is raised clear of the, record lei carried upon the rotatable carriage 150i the talking machine.

In the present instance, I have illustrated the tripping or releasing device associated with the record itself. An arm 16 extends forwardly from the member 1, the outer end of said arm curving downwardly and lying; close above the surface. of the record 14-. Extending through an aperture in the record is a pin or other projection 17, the said aperture being so located in the record that the pin 17 in its rotation will strike and give the arm 16 a lateral thrust whereby the shoulder 10 is released from engagement with the edge of the forward bearing 2, when the stylus has reached the end of the record. The distance of the aperture, through which the pin 17 passes, from the center. of the record will, of course, vary in different records, and to accommodate the pin to these varying distances the base 18 which supports the pin is slotted and is adapted to receive in said slot the center pin of the carriage, as shown in Fig. 6, this device being found materially to assist in placing the record on the carriage. The slotted base 18 is made thin and does not prevent the record from lying flat upon the carriage.

Instead of the pin 17, a suitably located shoulder 19 may be formed upon the record, as shown in Fig. '7, or otherwise established, against which the arm 16 is'thrust as the tone arm swings inwardly across the record, the tripping of the member 1 thus being ac complished. It is clear that the tripping element may be of any shape and may be permanently secured to the record, or not, as desired.

At the rear of the member 1 is carried a braking element 20, said element, in the present instance, consisting of a downwardly depending leg 21 upon an arm Z52 extending diagonally forward from the member 1. The leg 21 is preferably provided with a rubber buffer 21 or the like and is adapted when the member 1 is released to engage the side of the rotating carriage, against which it is held by the tension of the spring 8. When the member 1 has been released, with the consequent elevating of the stylus, and the leg 21 has engaged the side of the earriage, continued rotation of the carriage acts to carry the tone arm outwardly over the record to a position clear of the outer edge of the carria e, and a fixed stop 23 located adjacent the carriage and lying in the path of the tone arm is adapted to limit this outward oscillation. The movement of the tone arm thus being stopped, the leg 21 still bear ing against the side of the carriage operates as a stop to arrest the rotation of the carriage, whereby the entire mechanism is brought to rest.

In restarting the machine, the member 1 is re-set in retracted position, an arm 24: being provided upon the member for that purpose, and the stylus again lowered to the record, the carriage having been released with retraction of the member 1.

In Figs. 9 and 10, I have illustrated a modification of my device, in which the arm 16 of the member 1 is eliminated and the shoulder 10 at the forward end of the member 1 replaced bya corresponding shoulder 25, which is adapted to engage the rear edge of the rear bearing 2, as clearly shown in Fig. 9, thus retaining the member 1 in the retracted position against the tension of the spring 8. The releasing device in this modification consists of a vertically disposed arm 26 pivotally secured, in the present instance, to the side of one of the lugs 5 of the bracket member 3, said arm being adapted to engage the side of the member 1 to thrust the said member laterally in the bearings 2 and to release the said shoulder from contact with the edge of the bearing. Normally the arm 26 hangs loosely and does not bear against the side of the member 1, but located upon the floor of the phonograph is a stop 27 so placed that when the stylus has advanced to the end of the record, the lower end of the arm 26 comes in contact with the said check, whereupon the arm will be moved around its pivot- 26 and against the side of the member 1, the latter thus being released and moving forward in its hearings to elevate the sound-box in the manner previously described.

In order to insure the arm 26 impinging against the side of the member 1 with sufficient force to release the said member, and to carry the tone arm to the tripping point as quickly as possible after the end of the record has been reached, a steep spiral 28 may be cut in the inner ring of the record, as illustrated in Fig. 9, to receive the stylus after it leaves the regular sound groove, the effect of this spiral being, as stated, to ac celerate the movement of the tone arm inwardly toward the stop. IVhere the spiral is employed, the stop may he set permanently, but where the spiral is dispensed with, the stop 27 may be adjustable upon the floor of the phonograph so that the stopping position may be made to agree exactly with the end of any particular record.

In Fig. 8, I show a modification of the means by which the said device is attached to the tone arm, this form being particularly adapted to phonographs of the type in which the position of the sound-box relative to the tone arm is fixed and which requires the elevation of the major portion of the tone arm as well as the sound-box when the stylus is removed from the record. In this modification, the lugs 5, 5, of the bracket member 3 are eliminated and the said bracket member provided with an extension 29 adapted to be attached to the portion 30 of the tone arm 31, and a strut member 33 is provided upon the bracket member 3, said strut member extending downwardly and bearing against the side of the fixed portion 32 of the sound am. In this modification, the arm 22 of the member 1 is also eliminated and is replaced by a downlit llll

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weasel "\vardly extending" arm 34: which carries a' butler a l ttilltlltilOWGl end thereof, which is adapted to engage the side of the carriage in the same manner as the butter 21 c It clear that-thisderice iscapable 0t modification in a number of ways with no departure from the essential features oi the invention, and it will be understood that I do not desire to limitmy invention to any particular term or set of iiiorms.

I claim:

y 1. In a talking machine, the combination with a rotatable carriage adapted to liold a record, of a tone arn'i car]'yine astylus, a

member slidably mounted upon and solely slmported by the tone arm and having portions adapted respectively tor aising the stylus clear of the record audftoengage the carriage, a spring tendinp to shift the memher into operating positi n. in which the stylusis elevated by one oi said portions an d the carriage el'igrap'ed by the other, means for normally retaining the said member in inep erative position, and means For releasing; said member wheii the stylus has reached a predetermined point upon the record to permit the crating position.

2. in a talking machine, the combination with a rotatable carriage adapted to hold a record, of a tone arm carrying' a stylus, a member slidably mounted upon the tone arm and having portions adapted TBSPQCiZlVQly to raise the stylus by engagement with the sound box and to engage the carriage, a spring tending to shift the member into sound box and carnage-eimagine position, means for releasably retaining the member tree from engagement with the sound box and the carriage, and means automatically operative to release the member from the retaining means when the stylus has reached a predetermiz'led point upon the record to permit the spring" to shift the member into engagement with the sound box and the carriage.

3. in a talking machine, the coml'iin'atlon with a rotatable ('zarriage adapted to hold a .record, ot a tone arm carrying a stylus to adapted to engage the record, a member movably mounted upon the tone arm and having in an operative position one end adapted to elevate the stylus from the record; and the other end adapted to engage the carriage, a sprint; tending to shift the member into operatire position, means tor retaining; the member in inoperative position, means auto matically operative when the needle has reached a predetermined position upon the record. to release the member to permit the spring' to shitt it into operative position wherel'iy the stylus is elevated from the record and. the tone arm shifted by the movement of the carriage outwardly oit the record, and a stop limiting the outward spring; to shi't't the member into op-' movemei'it ol thetone arm whereby the can riage engaging end of the member 'i'unctions to stop the rotation of the carriage.

lTn a talkin machine, the conibi-nation with a rotatable carriag lapted to hold a record, oi a tone arm carry inn" a stylus, an automatically movable member carried and supported solely by said tone arm and adapted to raise the stylus clear of the record, an element carried by said member for engaging; the carriage whereby the tone arm is shititcd outnuirdly of said record, and means supl iorted by the carriage tor releasing said member when the stylus has reached a predetermined point upon the said record;

5. In a talking machine, the mml'iinaition with a rotatable carriagac adapted to hold a record, of a tone arm ci'ufryinp; a stylus, a member slidably mounted on and sup ported solely by the tone arm and adapted to raise the stylus clear of the records, said member having); an element adapted to engage the side of the carria Following the elevation of the stylus wl'iereh the tone arm is shifted outwardly of the record by the action ot the carriage. a stop limiting the (mt-ward movement oi the tone arm whereby the carriage-engagilm element oi? the member interriuiits the rotation of the carriage, and means For releasing said member when the stylus has reached a predetermined point upon the record.

6. ln a talking machine, the combination with a rotatable carriage adapted to hold a record, oi a tone arm carrying a stylus adapted to engage said record, a member slidably mounted on and supported solely by the tone arm and adapted to raise the stylus clear of the record, a spring tending; to shift the member into the stylus-raising position, means for releasably retaining the member in inoperative position, and means supported by the carriage for tripping the retaining means to release the member and to permit movement of said member by the spring into stylus-raising position.

7. In a talking machine, the combination with a rotatable carriage adapted to hold a record, of a tone arm carryim;- a stylus adapted to engage said record, a movable member carried and supported solely by the tone arm and adapted to raise the stylus clear of the record, a spring tending to shift the member into the stylus-raising position, means for releasably retaining the member in inoperative position, and adjustable means supported by the carriage for tripping the retaining means to release the member and to permit movement of said member by the spring into stylus-raising; position.

8. in a talking machine, the combination. with a rotatable carriage adapted to hold a record, of a tone arm carrying a stylus, a movable member carried and supported solely by said tone arm and adapted to raise the stylus clear of the record, a spring for actuating said member to raise the stylus, means normally retaining the member in retracted position, a projection extending above the face of the record and movable therewith, and an extension upon said member adapted to be engaged by the projection when the stylus has reached a predetermined point upon the said record whereby the said member is released from the re taining means and the spring permitted to shift it into the stylus-raising position.

9. A stop attachment for phonographs comprising a bracket member adapted to be attached to the tone arm of the phonograph, a member mounted in the bracket and slidable therein longitudinally of the tone arm, said member being adapted to engage the stylus-carrying member for raising the stylus clear of the record, a spring tending to shift the member into stylus-raising position, a shoulder on said member adapted to engage the bracket member to retain it in retracted position against the tension of the spring, and means for shifting the said member laterally in the bracket to disengage the shoulder and permit movement of the member by the spring into stylus-raising position.

10. In a talking machine, the combination with a rotatable carriage adapted to hold a record, of a tone arm carrying a stylus, a bracket member adapted to be attached to the tone arm, a member slidably mounted in said bracket member and adapted to en gage the stylus-carrying member for raising the stylus clear of the record, an element on said member adapted when the member is in the stylus-raising position to engage the side of the carriage, a spring tending to shift the member into the stylus-raising position, a shoulder on the slidable member.

adapted to engage the bracket to retain the said member in retracted position against the tension of the spring, and means for shifting the member laterally in the bracket to release the shoulder to permit the spring to shift the member into stylus-raising position.

EDVARD GRTEGER. 

